Nice work, I have found that with mine using just the PVC risers works just fine...no need for the solid PVC. I bought a long PVC tube and cut it into the sizes I needed. I used a hand saw, but found it went faster with a Miter saw. I only use 1 sheet of the eggcrate tho...saves money and time on cleaning. This is all just me, u do what works best 4 u.